A couple of weeks ago I noticed a few drops of oil on the ground after parking Bumblestook. Looking underneath, I saw that the AN coupling going from the hose that comes from the oil catch can to the bung on the oil pan was a bit wet. I decided to drain the oil to inspect the fitting as I had the same issue last year from a cracked coupling. The coupling looked intact but the leak was for sure coming from it so my conclusion was simply that it wasn't sealing properly.
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| New coupling (blue) and Early's conical seals (169110ERL) - 7-17-2022 |
To fix this problem, I ordered a new AN10 coupling that seems a bit beefier and also was a bit longer so that I could give the hose a little more slack. After reading up online about AN coupling seals, it seems that a lot of people recommended Earl's conical seals made of soft aluminum which is supposed to work great on potentially damaged mating surfaces. I figured they basically act like conical crush washers and aren't overly expensive so they were at least worth at try.
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| Early's 10AN conical seals (169110ERL) |
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| Conical seals fitted to the male end |
Finally, it was just a matter of putting the coupler back on and tightening it all back up. Last time I did this I didn't have a good way of holding on the hose end so I bought an adjustable AN wrench and this time I felt I really got it properly snug before hooking up the other end to the bung going to the oil pan.
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| Coupler installed |
I poured some oil into the catch can to let it flow down the hose just to check for any leaks and so far so good. I won't know for sure until I give her a proper run. We've got a big track day in a 3 weeks so I'll be able to really test it out.
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| Filling the oil back up - Amsoil 10W-30 |
Maintenance Update:
Mileage: 61,606
- 5.5 quarts Amsoil 10W-30
- Didn't change the oil filter this time as I had just replaced it 1000 miles and 3 months ago.
